us that he was gay, and that it was not a choice, and that it's just part of who he is, and that's who he'd been that way for as long as he could remember. >> reporter: his son, will came out to his parents while a freshman at yale university, and soon after portman was elected to the u-s senate.. >> what was your reaction when you talked to him? >> love. support, you know, 110%.surprise, yeah no idea, yeah. >> reporter: though never outspoken against gay marriage, the staunch conservative consistently voted against it. he says his son's courage to come out launched a process for him to rethink his long- standing position confiding in his faith and in his son's unique perspective. >> talking to my pastor and other religious leaders and going through a process of, at the end, changing my position on the issue. " >> but over time, yeah, we started talking about that more, and he was helpful as you can imagine at giving me some of his perspective on it and information about it, he's a very bright kid.